drm/amd/ras: Remove redundant error log

amdgpu_ras_inject_error() currently prints an extra "ras inject block %u
failed" message, remove the redundant log.

Signed-off-by: Stanley.Yang <Stanley.Yang

drm/amd/ras: Remove redundant error log

amdgpu_ras_inject_error() currently prints an extra "ras inject block %u
failed" message, remove the redundant log.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amd/ras: snapshot remote cmd header to fix double-fetch

The response header lives in PF-controlled shared memory. Copy it
into a local struct once, then read cmd_res and output_size from the
sna

drm/amd/ras: snapshot remote cmd header to fix double-fetch

The response header lives in PF-controlled shared memory. Copy it
into a local struct once, then read cmd_res and output_size from the
snapshot so the PF cannot flip cmd_res or grow output_size between
checks.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amd/ras: Return RAS TA injection result to userspace

Return RAS TA injection result to userspace that avoid
app continue to load work once injection failed.

Signed-off-by: Stanley.Yang <Stanley

drm/amd/ras: Return RAS TA injection result to userspace

Return RAS TA injection result to userspace that avoid
app continue to load work once injection failed.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amd/ras: cap pending_ecc_list size

Drop new entries once pending_ecc_count hits RAS_UMC_PENDING_ECC_MAX
(8192) so an ECC storm or repeated UMC error injection cannot exhaust
kernel memory. Dropp

drm/amd/ras: cap pending_ecc_list size

Drop new entries once pending_ecc_count hits RAS_UMC_PENDING_ECC_MAX
(8192) so an ECC storm or repeated UMC error injection cannot exhaust
kernel memory. Dropped events are counted and reported via a
rate-limited warning.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amdgpu: Fix TOCTOU on UniRAS command response size

The guest maps the PF response in shared VRAM (struct ras_cmd_ctx in the
command buffer). After amdgpu_virt_send_remote_ras_cmd() returns, the

drm/amdgpu: Fix TOCTOU on UniRAS command response size

The guest maps the PF response in shared VRAM (struct ras_cmd_ctx in the
command buffer). After amdgpu_virt_send_remote_ras_cmd() returns, the code
validated rcmd->output_size against the caller buffer, then copied
rcmd->output_buff_raw using rcmd->output_size again. A malicious PF could
change output_size between those reads so the memcpy length exceeds the
caller’s output_size and overflows guest stack or heap buffers.

Snapshot output_size with READ_ONCE() once, assign cmd->output_size from
that value, and use the same snapshot for the bounds check and memcpy.
Also read cmd_res once with READ_ONCE() so the error branch and
cmd->cmd_res assignment do not observe different values from shared memory.

Signed-off-by: Chenglei Xie <Chenglei.Xie@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amd/ras: copy ras log data instead of referencing pointers

When generating ras cper file, the original data nodes in the ras
log ring buffer may be deleted, leading to invalid pointer
access. Co

drm/amd/ras: copy ras log data instead of referencing pointers

When generating ras cper file, the original data nodes in the ras
log ring buffer may be deleted, leading to invalid pointer
access. Copy the data from the ras log ring instead of directly
referencing the pointers to avoid this issue.

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amd/ras: add length check for ras command output buffer

Add length check for ras command output buffer.

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com

drm/amd/ras: add length check for ras command output buffer

Add length check for ras command output buffer.

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amd/ras: fix memory leak on ras sw_init failure

Fix memory leak on ras sw_init failure.

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by:

drm/amd/ras: fix memory leak on ras sw_init failure

Fix memory leak on ras sw_init failure.

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amd/ras: add error handling for seqno operations

Add error handling for seqno operations.

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-b

drm/amd/ras: add error handling for seqno operations

Add error handling for seqno operations.

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amd/ras: bound CPER record fetch buffer size

Bound CPER record fetch allocation by buffer size.

v2: Drop redundant cap on cper_num and raise
GET_CPER_RECORD max buffer size.

Suggested-by:

drm/amd/ras: bound CPER record fetch buffer size

Bound CPER record fetch allocation by buffer size.

v2: Drop redundant cap on cper_num and raise
GET_CPER_RECORD max buffer size.

Suggested-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amd/ras: Add more IP versions for uniras

Add more IP versions for uniras

Signed-off-by: Ce Sun <cesun102@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexande

drm/amd/ras: Add more IP versions for uniras

Add more IP versions for uniras

Signed-off-by: Ce Sun <cesun102@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amdgpu: fix OOB risk parsing virt RAS batch trace replies on the VF

amdgpu_virt_ras_get_batch_records() indexed batchs[] and records[]
from ras_cmd_batch_trace_record_rsp copied out of shared me

drm/amdgpu: fix OOB risk parsing virt RAS batch trace replies on the VF

amdgpu_virt_ras_get_batch_records() indexed batchs[] and records[]
from ras_cmd_batch_trace_record_rsp copied out of shared memory without
fully bounding the cache window or per-batch offset/trace_num. A
tampered or corrupted buffer could set real_batch_num past the array,
make a naive start_batch_id + real_batch_num comparison wrap in
uint64_t, or point offset+trace_num past records[].

Add amdgpu_virt_ras_check_batch_cached() for a subtraction-based window
with a real_batch_num cap, re-run it after GET_BATCH_TRACE_RECORD, and
use an explicit batch index into batchs[]. Consolidate batch_id,
trace_num, and offset+trace_num checks; on any failure memset the cache
and return -EIO so the next call refetches.

Signed-off-by: Chenglei Xie <Chenglei.Xie@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...